That statement there is BULLSHIT.
He has already taken the money out of his paypal account.
you filed a dispute which, if paypal rules in your favor, that will put his paypal account in the negative. At which time he is responsible to bring his paypal account out of the negative standing.
Paypal will try to pull funds from his bank account. But he can stop that from happening.
Now if he never withdrew the money from his paypal account then that payment will just be placed on hold until the dispute/claim is resolved.
if the claim is ruled in your favor, then you will be refunded 100%
But if he withdrew the money and they still rule in your favor you wont receive anything.
you will get an email stating that they were unable to recover funds from his account.
Paypal forgets to tell you everything and how it really works.